Associated actions - in the sentence "You don't have permission to X", where the first part of the sentence comes from("You do not have permission to $2, for the following reasons:").
This is an action that corresponds to a user right. See Special:ListGroupRights for an overview of the rights used on translatewiki.net. See Manual:User rights at MediaWiki.org for general information.
For the corresponding user right to this action, MediaWiki:Action-editothersprofiles-private/en"), see:("
- ("View and update private information (email address) in other users' social profiles")
This will literally never be displayed anywhere to anyone, so don't bother wasting your time with it. The only reason this exists is because some Continuous Integration test expects it despite that it will never be shown...